The eccentric Harry Potter star had the duo in fits of giggles as she joked about the reasons for taking on her latest role - a cameo in the ITV2 series Plebs .

She insisted to the This Morning pair that she chose the role because the filming location was in Bulgaria, adding that she hoped to return despite meeting a grizzly end.

Not even remembering her character's name she told Holly who had suggested that it was impossible for her to return after dying a gruesome death: "You don't know I cant go back! How dare you say that?! I want to be in Plebs, I love it so much. Darling all things can happen! It happened in Dynasty... Well come on then!"

"I don't like the fact that there's a comedy department and someone is head of comedy, you know you just want to give them a smack!"

Miriam had the pair laughing away (Photo: ITV)

As Holly addressed Miriam's comments in the past that she gets nervous ahead of performing, Miriam questioned the blonde presenter: "Don't you get nervous? And so you should. It's good because it makes you crackle, and I can see you crackling a bit."